JP2020027270A - Electro-optical device and electronic apparatus - Google Patents

Abstract

To easily repair display defects continuing in a column or row direction.SOLUTION: An electro-optical device comprises: one unit circuit provided corresponding to an intersection of one scanning line and one data line; the other unit circuit provided corresponding to an intersection of the one scanning line and the other data line and an intersection of the other scanning line and the one data line, or the other unit circuit provided corresponding to an intersection of the other scanning line and the other data line; and an electro-optical element driven by the one unit circuit or the other unit circuit.SELECTED DRAWING: Figure 2

Description

  The present invention relates to, for example, an electro-optical device and an electronic apparatus.

  2. Description of the Related Art In recent years, various types of electro-optical devices using an electro-optical element such as an organic light emitting diode (hereinafter, referred to as an “OLED”) and a liquid crystal element have been proposed. This electro-optical device generally has a configuration in which unit circuits are provided corresponding to intersections of scanning lines and data lines. The unit circuit includes one or more transistors and capacitors, and holds the voltage of the data signal supplied to the data line when the scanning line is selected, and maintains the voltage of the data signal even when the scanning line is not selected. The configuration is such that the corresponding current is continuously supplied to the OLED or the voltage corresponding to the holding voltage is continuously applied to the liquid crystal element.

In such a configuration, when a defect, a defect, or the like occurs in a certain unit circuit, the electro-optical element driven by the unit circuit is always turned on (bright point) or constantly turned off (dark point). , Display quality is impaired.
Therefore, a spare (redundant) circuit capable of driving and connecting the electro-optical element is provided corresponding to the unit circuit for driving the electro-optical element, and if a defect or the like occurs in the unit circuit, the electro-optical element is replaced with a spare (redundant) circuit. A technique has been proposed in which the connection is switched from the unit circuit to the spare circuit to repair the defect or the like (for example, see Patent Document 1).

JP 2009-3009 A

  However, disconnection or the like may occur in the scan line or the data line due to an abnormal current flowing in the scan line or the data line corresponding to the unit circuit related to the defect or the like. In such a case, in the above technique, even if the unit circuits for one row sharing the scanning line or the unit circuits for one column sharing the data line are respectively switched to the spare circuit, the defect or the like is repaired. There was a problem that it was not possible.

  In order to solve one of the above problems, an electro-optical device according to one embodiment of the present invention includes a first scanning line and a second scanning line, a first data line and a second data line, and the first scanning line. And a first unit circuit provided corresponding to an intersection of the first data line and an intersection of the first scanning line and the second data line, and an intersection of the second scanning line and the first data line. Or a second unit circuit provided corresponding to any one of intersections of the second scanning line and the second data line, and an electro-optical element, wherein the first unit circuit includes: The first electro-optical element is driven, and the second unit circuit is configured to be able to drive the electro-optical element instead of the first unit circuit.

FIG. 2 is a perspective view illustrating a configuration of the electro-optical device according to the first embodiment. FIG. 2 is a diagram illustrating an electrical configuration of the electro-optical device. FIG. 3 is a diagram illustrating an arrangement of unit circuits in the electro-optical device. FIG. 3 is a diagram illustrating an arrangement of unit circuits and an equivalent circuit of an OLED. 6 is a timing chart illustrating an operation of the electro-optical device. 6 is a timing chart illustrating an operation of the electro-optical device. 6 is a timing chart illustrating an operation of the electro-optical device. FIG. 3 is a diagram illustrating a configuration of another unit circuit or the like of the electro-optical device according to the first embodiment. FIG. 9 is a diagram illustrating a display unit of the electro-optical device according to the second embodiment. FIG. 3 is a diagram illustrating an arrangement of unit circuits and OLEDs of the electro-optical device. FIG. 3 is a diagram illustrating an arrangement of unit circuits and an equivalent circuit of an OLED. FIG. 13 is a diagram illustrating a display unit of the electro-optical device according to the third embodiment. FIG. 3 is a diagram illustrating an arrangement of unit circuits and OLEDs of the electro-optical device. It is a figure showing the display of the electro-optical device concerning a 4th embodiment. FIG. 3 is a diagram illustrating an arrangement of unit circuits and OLEDs of the electro-optical device. FIG. 3 is a perspective view illustrating an HMD using the electro-optical device according to the embodiment and the like. It is a figure showing the optical composition of HMD.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

<First embodiment>
FIG. 1 is a perspective view illustrating a configuration of the electro-optical device 10 according to the first embodiment.
The electro-optical device 10 is a micro display that displays a color image on a head-mounted display (HMD), for example. Although details of the electro-optical device 10 will be described later, a plurality of unit circuits and electro-optical elements driven by the unit circuits are formed on, for example, a semiconductor silicon substrate, and an OLED is used as the electro-optical element.

The display unit 100 of the electro-optical device 10 is housed in a frame-shaped case 72 that opens in the image display area. One end of an FPC (Flexible Printed Circuits) board 74 is connected to a board housed in a case 72, and a plurality of terminals 76 are provided at the other end of the FPC board 74 and connected to a higher-level circuit (not shown). You. The control circuit 5 of a semiconductor chip is mounted on the FPC board 74 by COF (Chip On Film) technology, and image data is supplied from the host circuit via a plurality of terminals 76 in synchronization with a synchronization signal. . Note that the synchronization signal includes a vertical synchronization signal and a horizontal synchronization signal. In the image data, the gradation of the pixel of the image to be displayed is specified by, for example, 8 bits for each RGB. More specifically, in the present embodiment, the gradation of the pixel is specified stepwise from the darkest 0 level, that is, the level for displaying black, to the brightest 255 levels for each of RGB.
The control circuit 5 generates various control signals for vertical and horizontal scanning of the display unit 100 in accordance with a synchronization signal supplied from a higher-level circuit, divides the gradation into RGB sub-pixels, and performs display. The data is output in accordance with vertical scanning and horizontal scanning of the unit 100 or after processing. Note that the control circuit 5 also functions as a power supply circuit of the electro-optical device 10 and generates each potential (voltage).

FIG. 2 is a diagram illustrating an electrical configuration of the electro-optical device 10 according to the embodiment. As shown in this figure, the electro-optical device 10 includes a control circuit 5, a scanning line driving circuit 20, a plurality of Y selectors 22, a data line driving circuit 40, a plurality of X selectors 42, and a display unit 100. They are roughly divided into
In the display unit 100, the sub-pixels 130 are arranged in a matrix. More specifically, in this embodiment, (3M) scanning lines 12 grouped every three lines are provided in the display unit 100 so as to extend in the horizontal direction in the drawing, and are grouped every three lines. (3N) data lines 14 are provided extending in the vertical direction in the figure, and sub-pixels 130 are arranged corresponding to intersections of three scanning lines and three data lines that are grouped.

M and N are each an integer of 2 or more. For convenience, if the direction in which the scanning line 12 extends is a row (row) and the direction in which the data line 14 extends is a column (column), the sub-pixels 130 are arranged in M rows and N columns. Become.
In the present embodiment, the sub-pixels 130 correspond to any one of red (R), green (G), and blue (B), and have a stripe arrangement in the display unit 100, for example. Specifically, sub-pixels 130 of the same color are arranged linearly in the column direction and in the order of RGB in the row direction.
Note that one sub-pixel 130 includes one OLED, and the OLED emits light in a color corresponding to the sub-pixel 130 to represent one of the three primary colors. That is, the sub-pixel 130 is represented by the light emission of the OLED, and one pixel of the color image to be displayed is represented by the three sub-pixels 130 of RGB. Further, although the three RGB sub-pixels 130 constitute one pixel, other sub-pixels may be included, and four or more sub-pixels 130 may constitute one pixel.
In the present embodiment, one OLED is driven by one of the nine unit circuits, and the relationship between the OLED and the unit circuit will be described later.

  The control circuit 5 outputs various signals based on image data and synchronization signals supplied from the host circuit. Describing the main signals, the control circuit 5 controls the control signal Ctry for controlling the scanning line driving circuit 20, the control signal Ctrx for controlling the data line driving circuit 40, and the gradation of the sub-pixel 130. The designated gradation level Vd is output. Although not shown in FIG. 2 for simplicity, the control circuit 5 supplies the Y selector 22 with information indicating which scanning line 12 is to be enabled or disabled, and the X selector 22 Information indicating which data line 14 is enabled or disabled is supplied to 42.

The scanning line driving circuit 20 generates a scanning signal for sequentially scanning the sub-pixels 130 arranged in M rows and N columns over a period of one frame according to a control signal Ctry. Here, the scanning signals for scanning the sub-pixels 130 in the 1, 2, 3,..., (M−1), and M-th rows are G (1), G (2), G (3),. , G (M-1) and G (M).
In order to generally describe the rows of the sub-pixels 130 arranged in M rows and N columns and the rows of the scanning lines 12 grouped by three, an integer i satisfying 1 ≦ i ≦ M The scanning signal for scanning the sub-pixel 130 on the i-th row is described as G (i).
In addition, the period of one frame refers to a period required for the electro-optical device 10 to display an image for one cut (frame). For example, the frequency of the vertical synchronization signal included in the synchronization signal is 60 Hz, and the like. In the case of double speed, it is a period of 16.7 milliseconds for one cycle.

The Y selector 22 is provided corresponding to the three scanning lines 12 grouped. For this reason, M Y selectors 22 are provided in the present embodiment.
Each of the M Y selectors 22 enables one of the three scanning lines 12 and disables the other two of them in accordance with an instruction from the control circuit 5. Specifically, the Y selector 22 supplies the scanning signal from the scanning line driving circuit 20 to one enabled scanning line 12 as it is, and supplies the two disabled scanning lines 12 to each other. Each supplies a non-selection signal.
The enable for the scanning line 12 means that, in the case of vertical scanning, when a target to be scanned is supplied, a selection signal for turning on a transistor (described later) having a gate node connected to the scanning line 12 in the unit circuit is supplied, When a target is not scanned, a non-selection signal for turning off the transistor is supplied. In addition, disabling of the scanning line 12 refers to a state in which a vertical scanning is fixed to a non-selection signal regardless of whether or not the scanning is performed.
In the initial state, each of the Y selectors 22 enables, for example, one of the three scanning lines 12 at the top in the drawing.

The data line driving circuit 40 supplies a data signal to each of the sub-pixels 130 for one row selected by the scanning line driving circuit 20. In order to generally describe the columns of the sub-pixels 130 arranged in M rows and N columns and the columns of the data lines 14 grouped by three, an integer j satisfying 1 ≦ j ≦ N is used. Here, when the i-th row is selected, the data line driving circuit 40 sends the data signal S (1) to the i-th row and first column sub-pixel 130 and to the i-th row and second column sub-pixel 130. The data signal S (2) is output to the sub-pixel 130 at the i-th row and the third column, and the data signal S (3) is output to the sub-pixel 130 at the i-th row and the j-th column. I do.
An example of the data line driving circuit 40 will be described. In the data line driving circuit 40, a set of the latch circuit 402, the D / A conversion circuit 404, and the amplification circuit 406 is provided for each group, that is, for each of the three data lines 14. Provided.
Here, the latch circuit 402, the D / A conversion circuit 404, and the amplification circuit 406 will be described using the j-th group as a representative.
In the j-th group, when the i-th row is selected, the latch circuit 402 latches the gradation level Vd corresponding to the i-th row and j-th column sub-pixel 130 supplied from the control circuit 5. The D / A conversion circuit 404 converts the grayscale level Vd latched by the latch circuit 402 into an analog signal, and the amplifier circuit 406 amplifies the analog signal converted by the D / A conversion circuit 404 to generate a data signal. Output as Sd (j). Here, the latch circuit 402, the D / A conversion circuit 404, and the amplification circuit 406 have been described in the j-th group. However, the j-th latch circuit 402, the D / A conversion circuit 404, and the amplification circuit 406 other than the j-th group are also described. Works concurrently with a group of.
Note that the potential relationship of the data signal can be taken stepwise in a range from a potential V_0 corresponding to a gray level of 0 to a potential V_255 corresponding to a gray level of 255. Here, when the driving transistor for controlling the current to the OLED is a P-channel type, the higher the gradation level is specified, the lower the potential of the data signal is from the highest potential V_0 to the lowest potential V_255.

The X selectors 42 are provided corresponding to the three grouped data lines 14. For this reason, N X selectors 42 are provided in the present embodiment.
Each of the N X selectors 42 enables one of the three data lines 14 and disables the other two of them in accordance with an instruction from the control circuit 5.
Specifically, the X selector 42 supplies the data signal from the data line driving circuit 40 to one enabled data line 14 as it is, and supplies the two disabled data lines 14 to the enabled data line 14. A signal of a potential V_0 corresponding to a gray level of 0 level, that is, black display is supplied.
In the initial state, each of the X selectors 42 enables, for example, one of the three leftmost data lines 14 in the drawing.
The enabling of the data line 14 means a state in which a data signal is supplied from the data line driving circuit 40. In addition, disabling of the data line 14 refers to a state in which a signal of the potential V_0 for displaying black is supplied instead of a data signal from the data line driving circuit 40.
The control circuit 5, the scanning line driving circuit 20, the plurality of Y selectors 22, the data line driving circuit 40, and the plurality of X selectors 42 are an example of a driving circuit.

  Next, the relationship between the sub-pixel 130 and the unit circuit will be described.

FIG. 3 is a diagram illustrating an arrangement of the unit circuits 1000 in the electro-optical device 10. This figure shows an array of unit circuits 1000 corresponding to the sub-pixel 130 at the i-th row and the j-th column, the sub-pixel 130 at the i-th row (j + 1) -th column, and the sub-pixel 130 at the i-th row (j + 2). .
As shown in this figure, the unit circuit 1000 is provided corresponding to the intersection of one scanning line 12 and one data line 14. Therefore, nine unit circuits 1000 correspond to the sub-pixel 130 provided at the intersection of the three grouped scanning lines and three data lines.

In FIG. 3, the signals supplied to the three scanning lines 12 corresponding to the i-th sub-pixel 130 by the Y selector 22 are G (i) _a, G (i) _b, and G (i), respectively. ) _c.
Similarly, the signals supplied to the three data lines 14 corresponding to the sub-pixel 130 in the j-th column by the X selector 42 are S (j) _a, S (j) _b, S (j) _c, respectively. The signals supplied to the three data lines 14 corresponding to the sub-pixels 130 in the (j + 1) th column are S (j + 1) _a, S (j + 1) _b, and S (j + 1), respectively. _c, and the signals supplied to the three data lines 14 corresponding to the (j + 2) -th sub-pixel 130 are S (j + 2) _a, S (j + 2) _b, and S (j, respectively). +2) _c.

  FIG. 4 is a diagram illustrating an electrical configuration of one sub-pixel 130. In the present embodiment, one OLED 150 and nine unit circuits 1000 are provided for one sub-pixel 130. Note that FIG. 4 shows only an equivalent circuit such as the unit circuit 1000 and does not reflect an actual circuit layout.

As shown in this figure, a total of nine unit circuits 1000 are provided corresponding to the intersections of the three scanning lines 12 and the three data lines 14 corresponding to the sub-pixels 130.
One unit circuit 1000 includes P-channel transistors 121 and 122 and a capacitor Cpix.
The gate node of the transistor 122 is connected to the scanning line 12, one of the drain and source nodes is connected to the data line 14, and the other is connected to the gate node of the transistor 121 and one end of the capacitor Cpix. In the transistor 121 which is an example of the driving transistor, a source node is connected to the power supply line 116. The power supply line 116 is supplied with a potential Vel which is the power supply higher side of the OLED 150.
The other end of the capacitor Cpix is connected to the power supply line 116 in this embodiment, but may be connected to another potential power supply line as long as it is kept at a constant potential.

  The nine unit circuits 1000 have the same configuration when viewed electrically. The drain nodes of the transistors 121 in the nine unit circuits 1000 are commonly connected to the anode of the OLED 150. The cathode of the OLED 150 is connected to the power supply line 118. The power supply line 118 is supplied with a potential Vct which is a lower power supply side of the OLED 150.

The operation of the electro-optical device 10 will be described with reference to the timing chart of FIG.
As shown in this figure, the scanning signals G (1) to G (M) are sequentially switched to the L level over the period of one frame (F), and the sub-pixels 130 in the 1st to Mth rows are switched for one horizontal scanning period. Scanning is performed in order for each (H).
In the initial state, the M Y selectors 22 enable only the uppermost one of the three scanning lines 12. Therefore, in the i-th row, the Y selector 22 outputs the signals G (i) _a, G (i) _b, and G (i) _c supplied to the three scanning lines 12 corresponding to the i-th row. Of these, the signal G (i) _a is the scanning signal G (i) output from the scanning line driving circuit 20, and the signals G (i) _b and G (i) _c are the H level of the non-selection signal. . Although the i-th row is described here, the same applies to other rows.

In the initial state, the N X selectors 42 enable only the leftmost one of the three data lines 14. Therefore, in the j-th column, the X selector 42 outputs the signals S (j) _a, S (j) _b, and S (j) _c supplied to the three data lines 14 corresponding to the j-th column. Of these, the signal S (j) _a is the data signal S (j) output from the data line driving circuit 40, and the signals S (j) _b and S (j) _ are the potential V_0.
Here, the j-th column is described, but the same applies to other columns.

Here, when the scanning signal G (i) becomes L level in accordance with the selection of the i-th row, the data signal S (j) of the j-th column becomes the gradation level (i, j) of the i-th row and j-th column. ).
When the scanning signal G (i) becomes L level, the transistor 122 is connected to the three unit circuits 1000 corresponding to the uppermost scanning line 12 among the nine unit circuits corresponding to the sub-pixel 130 at the i-th row and the j-th column. Turns on, but the transistor 122 turns off in the six unit circuits 1000 corresponding to the center and bottom scanning lines 12.

Therefore, out of the nine unit circuits 1000 corresponding to the sub-pixel 130 in the i-th row and the j-th column, the three unit circuits 1000 corresponding to the uppermost scanning line 12 have the leftmost unit circuit 1000 Holds the voltage of the signal S (j), while the capacitor Cpix of the unit circuit 1000 located at the center and the rightmost holds the potential V_0.
Of the three unit circuits, in the leftmost unit circuit 1000, even if the signal G (i) _a changes from L level to H level, the gate node of the transistor 121 is controlled by the capacitor Cpix to generate the signal S (j ), The transistor 121 continues to flow a current corresponding to the voltage toward the OLED 150.
In the unit circuit 1000 located at the center and the rightmost of the three unit circuits, even if the signal G (i) _a changes from L level to H level, the gate node of the transistor 121 is set to the potential V_0 by the capacitor Cpix. , The transistor 121 does not allow the current to flow toward the OLED 150.

  Note that among the nine unit circuits corresponding to the OLED 150 in the i-th row and the j-th column, in the six unit circuits 1000 corresponding to the center and the lowermost scanning line 12, the transistor 121 does not turn on. The signal via the data line 14 is not held in the capacitor Cpix. More specifically, one end of the capacitor Cpix, that is, the gate node of the transistor 121 is almost at the potential Vel due to leakage. For this reason, in the six unit circuits 1000, the transistor 121 does not cause the current to flow toward the OLED 150.

Therefore, among the nine unit circuits 1000 corresponding to the sub-pixel 130 at the i-th row and the j-th column, the current flows toward the OLED 150 because the uppermost scanning line among the three scanning lines 12 is enabled. Of the 12 and 3 data lines 14, only the unit circuit 1000 corresponding to the enabled leftmost data line 14 is provided, and the OLED 150 in the i-th row and j-th column sub-pixel 130 emits light according to the current. Will do.
Here, the sub-pixel 130 on the i-th row and the j-th column has been described. However, the same applies to the other sub-pixels 130. The top scanning line 12 and the three data lines 14 among the three scanning lines are used. Only the unit circuit 1000 corresponding to the leftmost data line 14 flows a current corresponding to the holding voltage of the capacitor Cpix to the corresponding OLED 150.

In the initial state, if the unit circuits 1000 corresponding to the scanning lines 12 enabled by the Y selectors 22 and the data lines 14 enabled by the X selectors 42 are all normal, the display quality does not deteriorate. .
However, as described above, a defect may occur after the initial state in the unit circuit 1000 for one row using the scanning line 12 or the unit circuit 1000 for one column using the data line 14 as a unit.

After the initial state, for example, when the i-th row has a display defect, of the three scanning lines 12 corresponding to the sub-pixel 130 of the i-th row, the uppermost scanning line 12 that is enabled Alternatively, there is a high possibility that the unit circuit 1000 corresponding to the scanning line 12 is defective.
Therefore, in this embodiment, in this case, the control circuit 5 sets the scanning line 12 to be enabled among the three scanning lines 12 corresponding to the sub-pixel 130 in the i-th row, for example, to the scanning line other than the top one, for example. The i-th row Y selector 22 is instructed to switch to the center scanning line 12.

  In response to this instruction, the Y selector 22 corresponding to the i-th row enables the scanning signal G (i) from the scanning line driving circuit 20 to enable the scanning signal G (i) among the three scanning lines 12 corresponding to the sub-pixels 130 in the i-th row. And a non-selection signal is supplied to the uppermost and lowermost scanning lines 12.

Here, as shown in FIG. 6, when the scanning signal G (i) becomes L level, the signal G (i) _b also becomes L level, but the signals G (i) _a and G (i) _c Becomes the H level of the non-selection signal.
Therefore, in the i-th row and the j-th column, among the nine unit circuits corresponding to the sub-pixel 130, the transistor 122 is turned on in the three unit circuits 1000 corresponding to the central scanning line 12, but the transistor 122 is turned on. In addition, in the six unit circuits 1000 corresponding to the lowermost scanning line 12, the transistor 122 is turned off.
On the other hand, when the signal G (i) _b becomes L level, of the three data lines 14 corresponding to the j-th column, the leftmost data line 14 has a floor toward the LED 150 in the i-th row and j-th column. The point that the potential V_0 is supplied to the other two data lines 14 while the gray level signal S (j) is supplied is the same as the initial state.

Therefore, of the nine unit circuits 1000 corresponding to the sub-pixel 130 at the i-th row and the j-th column, the current flows toward the OLED 150 only in the enabled central scanning line 12 of the three scanning lines 12. , And only the unit circuit 1000 corresponding to the enabled leftmost data line 14 among the three data lines 14, and the OLED 150 in the i-th row and the j-th column emits light in accordance with the current.
Here, the sub-pixels 130 in the i-th row and the j-th column have been described, but the same applies to the sub-pixels 130 in the i-th row and other columns. Only the unit circuit 1000 corresponding to the leftmost data line 14 among the data lines 14 causes a current corresponding to the holding voltage of the capacitor Cpix to flow to the OLED 150 in the corresponding sub-pixel 130.
Therefore, out of the three scanning lines 12 corresponding to the i-th row, the uppermost scanning line 12 or the unit circuit 1000 corresponding to the scanning line 12 is defective, and the i-th row is a display defect. Even in the case where the display defect has occurred, the display defect can be repaired.

  If a display defect occurs even if the uppermost or center scanning line 12 among the three scanning lines 12 corresponding to the i-th row is enabled, the lowermost scanning line 12 is enabled. What should be done.

  On the other hand, if the display defect occurs not in the row direction but in the column direction after the initial state, for example, when the j-th column is a display defect, the control circuit 5 sets Among the three data lines 14 corresponding to the pixel 130, the X selector 42 in the j-th column is instructed to switch the data line 14 to be enabled to, for example, the center data line 14 other than the leftmost one.

In response to this instruction, the X selector 42 corresponding to the j-th column, as shown in FIG. 7, converts the data signal S (j) from the data line driving circuit 40 into three data corresponding to the OLED 150 in the j-th column. Of the fourteen lines, a signal S (j) _b is supplied to the enabled central data line 14, and a signal of potential V_0 is supplied to the leftmost data line 14 as a signal S (j) _a. A signal of a potential V_0 is supplied to the data line 14 as a signal S (j) _c.
For this reason, among the nine unit circuits 1000 corresponding to the sub-pixel 130 at the i-th row and the j-th column, the current is supplied to the OLED 150 only in the uppermost enabled scanning among the three data lines 14. Of the line 12 and the three data lines 14, only the unit circuit 1000 corresponding to the enabled central data line 14 is provided, and the OLED 150 in the i-th row and the j-th column emits light according to the current.
Here, the sub-pixel 130 in the i-th row and the j-th column has been described. However, the same applies to the sub-pixel 130 in the other row and the j-th column. Of the twelve and three data lines 14, only the unit circuit 1000 corresponding to the leftmost data line 14 at the center is provided, and the OLED 150 in the i-th row and the j-th column emits light according to the current.
Therefore, of the three data lines 14 corresponding to the j-th column, the leftmost scanning line 12 or the unit circuit 1000 corresponding to the data line 14 is defective, and the j-th column is a display defect. Even in the case where the display defect has occurred, the display defect can be repaired.
If a display defect occurs even if the leftmost and center data line 14 among the three data lines 14 corresponding to the j-th column is enabled, the rightmost data line 14 is enabled. What should be done.

  As described above, according to the present embodiment, it is possible to easily repair a display defect that has occurred afterward along the row direction or the column direction.

In the first embodiment, one of the three scanning lines 12 corresponding to one sub-pixel 130 is enabled, and the other two are disabled. Use one line. Further, by enabling one of the three data lines 14 corresponding to one sub-pixel 130 and disabling the other two, one of the three columns is enabled. Use Then, a current is supplied to the OLED 150 using one unit circuit 1000 corresponding to the intersection of the enabled scanning line 12 and the enabled data line 14, and the other eight unit circuits 1000 are not used. Configuration. That is, the unit circuit 1000 that allows current to flow through one OLED 150 is determined by enabling only one scanning line 12 out of three rows and enabling only one data line 14 out of three columns. It is a configuration that is performed.
Then, the determined one unit circuit 1000 drives the OLED 150, and one of the other eight unit circuits 1000 replaces the one unit circuit 0100 with the scanning line 12 or the data line 14 to be enabled. The OLED 150 can be driven by the change.
Note that the unit circuit 1000 for flowing a current through the OLED 150 may have a configuration determined as follows.
For example, as shown in FIG. 8, a transistor 123 which is an example of a light emission control transistor may be provided between the transistor 121 and the OLED 150 in each unit circuit 1000.
In the unit circuit 1000 having this configuration, if the transistor 123 is off, the transistor 121 does not flow current toward the OLED 150 regardless of the holding voltage of the capacitor Cpix.
Therefore, by supplying a control signal aligned in the row or column direction to the gate node of the transistor 123, the row or column of the unit circuit 1000 used for driving the OLED 150 can be selected.
For the control signals of the transistors 123, for example, if they are aligned in the row direction, the Y selector 22 supplies a signal for turning on the transistor 123 to one of the three rows in accordance with an instruction from the control circuit 5, and outputs the signal in the column direction. In this case, the X selector 42 may supply a signal for turning on the transistor 123 to one of the three columns in accordance with an instruction from the control circuit 5.
Further, when aligning in the column direction, the X selector 42 may be omitted, and the data line driving circuit 40 may directly supply a signal to each of the data lines 14. In this configuration, the data line drive circuit 140 may receive information on the data line 14 to be enabled or disabled from the control circuit 5 and enable or disable each of the data lines 14 according to the information. . That is, in this configuration, the data line drive circuit 140 supplies a data signal corresponding to the gray level to the data line 14 to be enabled, and supplies a potential corresponding to black display to the data line 14 to be disabled. V_0 signal is supplied.
Since the transistor 123 may be in series with the transistor 121 and the OLED 150 in each unit circuit 1000, the transistor 123 is not limited to between the transistor 121 and the OLED 150 as shown in FIG. May be provided between them.

In the unit circuit 1000, the potential relation may be interchanged due to a change in the channel type of the transistors 121 and 122 or the like. When the potential relationship changes, the node described as a drain node may be a source node, and the node described as a source node may be a drain node. For example, one of the source node and the drain node of the transistor 121 may be electrically connected to the power supply line 116, and the other may be electrically connected to the anode of the OLED 150 via the transistor 121.
The unit circuit 1000 is simply shown in FIG. 4 or FIG. 8, and may have a configuration other than that shown in FIG. 4 or FIG. For example, a transistor for diode-connecting the transistor 121 or a transistor for setting the anode of the OLED 150 to a predetermined potential may be provided to compensate for the threshold characteristics of the transistor 121.

In the first embodiment, one OLED 150 is driven by any one of the nine unit circuits 1000. However, any configuration may be used as long as the OLED 150 is driven by any one of the two or more unit circuits 1000. In this case, in the two or more unit circuits 1000, one of the scanning line 12 and the data line 14 may be non-shared. Specifically, one OLED is provided with one unit circuit provided corresponding to the intersection of one scanning line and one data line, and one scanning line instead of the one unit circuit. Intersecting with another data line, intersecting another scanning line with the one data line, or another unit circuit provided corresponding to the intersection of the other scanning line with the other data line. It may be driven by either of the above.
More specifically, if the OLEDs 150 are arranged in M rows and N columns, the unit circuits 1000 may be arranged in m rows more than M rows and in n columns more than N columns. When the unit circuits 1000 are arranged in m rows and n columns, the number of the scanning lines 12 is m and the number of the data lines 14 is n.

In the above-described first embodiment, one OLED 150 is driven by any one of the two or more unit circuits 1000, and the OLED 150 is replaced with another OLED 150 instead of the one unit circuit 1000. Although one unit circuit 1000 is configured to be drivable, such a configuration may be configured to be a part of the display unit 100 instead of the whole.
Accordingly, an embodiment in which one OLED 150 is driven by one of two or more unit circuits 1000 for a part of the display unit 100 will be described next.

<Second embodiment>
FIG. 9 is a diagram illustrating the display unit 100 of the electro-optical device 10 according to the second embodiment, and FIG. 10 is a diagram schematically illustrating an arrangement of the unit circuits 1000 and the sub-pixels 130 of the electro-optical device 10. .
As shown in FIG. 10, in the second embodiment, in the display unit 100, the size of the sub-pixel 130 in the left half area is smaller than the size of the sub-pixel 130 in the right half area in the row and column directions. Over 1.5 times. For this reason, the density of the sub-pixels 130 in the left area is lower than the density of the sub-pixels 130 in the right area. Therefore, in FIG. 9, the left area is described as (1) low definition area, and the right area is (2). ) High definition area.
The low definition area in the left area is an example of the first area, and the high definition area in the right area is an example of the second area.
On the other hand, the arrangement density of the unit circuits 1000 is the same in the right region and the left region. Therefore, when the unit circuits 1000 and the sub-pixels 130 correspond one-to-one in the right region of the display unit 100, the unit circuits 1000 are excessive with respect to the sub-pixels 130 in the left region. Therefore, in the second embodiment, the unit circuit 1000 which has become excessive in the left region is used when a defect occurs.
Specifically, the correspondence relationship with the sub-pixel 130 in the left area will be described with reference to FIG.

  In FIG. 10, the notation “→” on the left side of the display unit 100 indicates the position of the scanning line 12, and the notation “↑” on the lower side of the display unit 100 indicates the position of the data line 14. Therefore, the unit circuits 1000 are arranged corresponding to the notation “→” and the notation “の”.

In the left region, the first column of the sub-pixels 130 uses the unit circuits 1000 in the first column corresponding to the “R” and “Ｒ” data lines 14. In the left area, the second column of the sub-pixels 130 has the unit circuit 1000 in the second column corresponding to the unmarked (blank) “Δ” data line 14 as a spare, and is connected to the “G” and “お よ び” data lines 14. The corresponding unit circuit 1000 in the third column is used. In the left region, the third column of the sub-pixels 130 uses the unit circuits 1000 in the fourth column corresponding to the data lines 14 of “B” and “Δ”, and 5 corresponding to the data line 14 of the unmarked “Δ”. The unit circuit 1000 in the column is set as a spare.
In the left area, the first row of the sub-pixels 130 uses the unit circuit 1000 in the first row. The unit circuit 1000 in the first row is used not only in the (1) low definition area in the left area but also in the (2) high definition area in the right area. (1) and (2) are added to the notation “→”.
The unit circuit 1000 in the second row is not used in the (1) low definition area in the left area, but is used only in the (2) high definition area in the right area. Only “(2)” is added to the notation “→” indicating the position.

FIG. 11 is a diagram showing an electrical configuration of five unit circuits 1000 and three sub-pixels 130 indicated by black circles in FIG. Note that FIG. 11 is merely a diagram for describing an electrical configuration, and the pitch of the sub-pixels 130 is different from that of FIG.
As shown in FIG. 11, in the row, the R sub-pixel 130 in the first column (left end) corresponds to only the unit circuit 1000 in the first column, and the unit circuit 1000 supplies a current to the R OLED 150. . The G sub-pixels 130 in the second column correspond to the unit circuits 1000 in the second and third columns, and one of the unit circuits 1000 passes a current to the G OLED 150. The B sub-pixels 130 in the third column correspond to the unit circuits 1000 in the fourth and fifth columns, and one of the unit circuits 1000 passes a current to the OLED 150 in B.
Of these, since the unit circuits 1000 in the second and fifth columns are spare, the data 14 in the second and fifth columns are disabled in the initial state, and the first, third, and fourth columns are disabled. The data line 14 of the eye is enabled.
If a display defect occurs in the third or fourth column in the initial state, the display defect can be repaired by enabling the data line 14 in the second or fifth column.
Although omitted in FIG. 11, the unit circuit 1000 in the eighth column is also a spare as shown in FIG. Therefore, if a display defect occurs in the seventh column in the initial state, the display defect can be repaired by enabling the data line 14 in the eighth column.

  In the second embodiment, the left area of the display unit 100 is a low-definition area, and the right area is a high-definition area. Further, although the display unit 100 is equally divided into left and right, the display unit 100 may be divided into different proportions in left and right.

<Third embodiment>
FIG. 12 is a diagram illustrating the display unit 100 of the electro-optical device 10 according to the third embodiment, and FIG. 13 is a diagram simply illustrating the arrangement of the unit circuits 1000 and the sub-pixels 130 of the electro-optical device 10. .
As shown in FIG. 13, in the third embodiment, in the display unit 100, the size of the sub-pixel 130 in the upper half area is smaller than the size of the sub-pixel 130 in the lower half area in the row and column directions. Over 1.5 times. For this reason, the density of the sub-pixels 130 in the upper region is lower than the density of the sub-pixels 130 in the lower region. Therefore, in FIG. 12, the upper region is described as (1) low definition region, and the lower region is (2). ) High definition area.
The low definition area in the upper area is an example of the first area, and the high definition area in the lower area is an example of the second area.
On the other hand, the arrangement density of the unit circuits 1000 is the same in the upper region and the lower region. For this reason, when the unit circuit 1000 and the sub-pixel 130 correspond one-to-one in the lower region of the display unit 100, the unit circuit 1000 is excessive relative to the sub-pixel 130 in the upper region. Therefore, in the third embodiment, the unit circuit 1000 that has become excessive in the upper region is used when a defect occurs.
Specifically, the correspondence relationship with the sub-pixel 130 in the upper region will be described with reference to FIG.

Specifically, the sub-pixels 130 in the first row use the unit circuits 1000 in the first row, and use the unit circuits 1000 in the second row as spares. For this reason, (1) is added to the notation “→” indicating the position of the scanning line 12 on the first row, which means (1) that it is used in the low definition area. The notation “→” indicating the position is indicated by a blank (blank) in the sense of reserve.
Note that the sub-pixels 130 in the second row use the unit circuits 1000 in the third row. Therefore, (1) is added to the notation “→” indicating the position of the scanning line 12 in the third row.

The first sub-pixel 130 (R) in the upper region and the first sub-pixel 130 (R) in the lower region use the unit circuit 1000 in the first column. Therefore, “R” and “R” are added to the notation “の” indicating the position of the data line 14 in the first column. Note that the top of “R” and “R”, that is, the upper “R” in FIG. 13 means that the upper region of the display unit 100 is used by the sub-pixel 130 (R), and that “R” and “R” are used. 13, that is, “R” on the lower side in FIG. 13 means that the lower region of the display unit 100 is used by the sub-pixel 130 (R).
In the upper region, the sub-pixel 130 (G) in the second column uses the unit circuit 1000 in the second column as a spare and uses the unit circuit 1000 in the third column. On the other hand, in the lower region, the sub-pixel 130 (G) in the second column uses the unit circuit 1000 in the second column. For this reason, “No mark (blank)” and “G” are added to the notation “↑” indicating the position of the data line 14 in the second column.
In the upper region, the sub-pixels 130 (G) in the second column use the unit circuits 1000 in the third column, and in the lower region, the sub-pixels 130 (B) in the third column use the unit circuits 1000 in the third column. Use Therefore, “G” and “B” are added to the notation “の” indicating the position of the data line 14 in the third column.
In the upper region, the sub-pixel 130 (B) in the third column uses the unit circuit 1000 in the third column and sets the unit circuit 1000 in the fourth column as a spare. On the other hand, in the lower region, the sub-pixel 130 (R) in the fourth column uses the unit circuit 1000 in the fourth column. Therefore, “B” and “R” are added to the notation “↑” indicating the position of the data line 14 in the fourth column.
In the upper region, the sub-pixel 130 (B) in the fourth column uses the unit circuit 1000 in the fifth column as a spare and uses the unit circuit 1000 in the sixth column. On the other hand, in the lower region, the sub-pixel 130 (G) in the fifth column uses the unit circuit 1000 in the fifth column. Therefore, “No mark (blank)” and “G” are added to the notation “の” indicating the position of the data line 14 in the fifth column.

  In the initial state, if a display defect occurs in the first row, the display defect can be repaired by enabling the scanning line 12 in the second row.

  In the third embodiment, the upper region of the display unit 100 is defined as a low definition region, and the lower region is defined as a high definition region. Although the display unit 100 is equally divided into upper and lower parts, the display part 100 may be divided into different parts in upper and lower parts.

<Fourth embodiment>
FIG. 14 is a diagram illustrating the display unit 100 of the electro-optical device 10 according to the fourth embodiment, and FIG. 15 is a diagram simply illustrating the arrangement of the unit circuits 1000 and the sub-pixels 130 of the electro-optical device 10. .
In this example, the display unit 100 is divided into an upper region, a middle region, and a lower region, and the upper region is (1) a low definition region, the middle region is (2) a high definition region, and the lower region is an upper region. A similar (3) low-definition area is obtained.
Since the fourth embodiment is an extension of the third embodiment, no special description will be required.

  In the fourth embodiment, if a display defect occurs in the first or sixth row in the initial state, the display defect is repaired by enabling the scanning line 12 in the second or seventh row. be able to.

In the fourth embodiment, the display unit 100 has been described as having a configuration in which the upper area, the middle area, and the lower area are divided into upper and lower three parts. The configuration divided into three parts on the left and right sides is also an extension of the second embodiment, and need not be specifically described.
The number of divisions is not limited to “3”.
In any case, it is preferable that the arrangement density of the sub-pixels 130 becomes lower from the middle region toward the peripheral region. This is because human luminosity becomes more sensitive toward the center and becomes less sensitive toward the periphery.
According to the second to fourth embodiments, the image data to be supplied to the electro-optical device 10 can be reduced by the amount corresponding to the low definition area.

In the first to fourth embodiments, the OLED 150 is described as an example of the electro-optical element. However, the OLED 150 may be an inorganic light emitting diode, an LED (Light Emitting Diode), or a liquid crystal element. In short, an element whose optical characteristics change according to supply of electric energy (application of an electric field or supply of current) can be applied as an electro-optical element.
Each aspect / embodiment described herein may be used alone or in combination. Also, the term "connected," or any variation of the term, means any direct or indirect connection or coupling between two or more elements that is "connected" to each other. Including the presence of one or more intermediate elements between the two elements. The coupling or connection between the elements may be physical, logical, or a combination thereof.

<Electronic equipment>
Next, electronic equipment to which the electro-optical device 10 according to the embodiment and the like is applied will be described. The electro-optical device 10 is suitable for applications in which pixels have a small size and high-definition display. Therefore, a description will be given using a head-mounted display as an example of the electronic apparatus.

FIG. 16 is a diagram showing an appearance of a head mounted display, and FIG. 17 is a diagram showing an optical configuration thereof.
First, as shown in FIG. 16, the head-mounted display 300 has a temple 310, a bridge 320, and lenses 301L and 301R in appearance, similar to general glasses. As shown in FIG. 17, the head-mounted display 300 includes the electro-optical device 10L for the left eye and the right eye on the back side (the lower side in the drawing) of the lenses 301L and 301R near the bridge 320. And an electro-optical device 10R.
The image display surface of the electro-optical device 10L is arranged to be on the left side in FIG. Thereby, the display image by the electro-optical device 10L is emitted in the direction of 9 o'clock in the figure through the optical lens 302L. The half mirror 303L reflects the image displayed by the electro-optical device 10L in the direction of 6 o'clock, while transmitting light incident from the direction of 12 o'clock.
The image display surface of the electro-optical device 10R is disposed on the right side opposite to the electro-optical device 10L. Thereby, the display image by the electro-optical device 10R is emitted in the direction of 3 o'clock in the figure through the optical lens 302R. The half mirror 303R reflects an image displayed by the electro-optical device 10R in the 6 o'clock direction, while transmitting light incident from the 12 o'clock direction.

In this configuration, the wearer of the head-mounted display 300 can observe a display image by the electro-optical devices 10L and 10R in a see-through state superimposed on an outside state.
Further, in the head-mounted display 300, when the left-eye image is displayed on the electro-optical device 10L and the right-eye image is displayed on the electro-optical device 10R among the binocular images with parallax, Thus, the displayed image can be perceived as if it has a depth and a three-dimensional effect.

  The electro-optical device 10 can be applied not only to the head-mounted display 300 but also to an electronic viewfinder in a video camera, a digital camera with interchangeable lenses, and the like.

  Reference Signs List 10: electro-optical device, 12: scanning line, 14: data line, 20: scanning line drive circuit, 22: Y selector, 40: data line drive circuit, 42: X selector, 100: display unit, 121, 122, 123 ... Transistor, 150 OLED, 1000 unit circuit.

In order to solve one of the above problems, an electro-optical device according to one embodiment of the present invention includes a first scanning line and a second scanning line, a first data line and a second data line, and the first scanning line. And a first unit circuit provided corresponding to an intersection of the first data line and an intersection of the first scanning line and the second data line, and an intersection of the second scanning line and the first data line. Or a second unit circuit provided corresponding to any one of intersections of the second scanning line and the second data line, and an electro-optical element, wherein the first unit circuit includes: driving the electric optical element, the second unit circuit, the drive configured to allow the electro-optical device in place of the first unit circuit.

The control circuit 5 outputs various signals based on image data and synchronization signals supplied from the host circuit. Describing the main signals, the control circuit 5 controls the control signal Ctry for controlling the scanning line driving circuit 20, the control signal Ctrx for controlling the data line driving circuit 40, and the gradation of the sub-pixel 130. The designated gradation level Vd is output. Although not shown in FIG. 2 for the sake of simplicity, the control circuit 5 instructs the Y selector 22 to determine which scanning lines 12 are to be enabled and which scanning lines 12 are to be disabled . Is supplied to the X selector 42, and information indicating which data line 14 is to be enabled or disabled is supplied to the X selector 42.

The scanning line driving circuit 20 generates a scanning signal for sequentially scanning the sub-pixels 130 arranged in M rows and N columns over a period of one frame according to a control signal Ctry. Here, the scanning signals for scanning the sub-pixels 130 in the 1, 2, 3,..., (M−1), and M-th rows are G (1), G (2), G (3),. , G (M-1) and G (M).
In order to generally describe the rows of the sub-pixels 130 arranged in M rows and N columns and the rows of the scanning lines 12 grouped by three, an integer i satisfying 1 ≦ i ≦ M The scanning signal for scanning the sub-pixel 130 on the i-th row is described as G (i).
Further, 1 and the frame period of the electro-optical device 10 refers to a period required for displaying an image of one cut (frame) min, a 60Hz frequency of the vertical synchronizing signal included in the example synchronization signals, the image If the display is at the same speed as the vertical synchronizing signal, the period is 16.7 milliseconds corresponding to one cycle of the signal .

In FIG. 3, the signals supplied to the three scanning lines 12 corresponding to the i-th sub-pixel 130 by the Y selector 22 are G (i) _a, G (i) _b, and G (i), respectively. ) _c.
Similarly, the signals supplied to the three data lines 14 corresponding to the sub-pixel 130 in the j-th column by the X selector 42 are S (j) _a, S (j) _b, S (j) _c, respectively. The signals supplied to the three data lines 14 corresponding to the sub-pixels 130 in the (j + 1 ) -th column are S (j + 1) _a, S (j + 1) _b, and S (j + 1), respectively. ) _c, and the signals supplied to the three data lines 14 corresponding to the sub-pixels 130 in the (j + 2) th column are S (j + 2) _a, S (j + 2) _b, and S ( j + 2) _c.

In the initial state, the N X selectors 42 enable only the leftmost one of the three data lines 14. Therefore, in the j-th column, the X selector 42 outputs the signals S (j) _a, S (j) _b, and S (j) _c supplied to the three data lines 14 corresponding to the j-th column. Of these, the signal S (j) _a is the data signal S (j) output from the data line driving circuit 40, and the signals S (j) _b and S (j) _c are the potential V_0.
Here, the j-th column is described, but the same applies to other columns.

Here, as shown in FIG. 6, when the scanning signal G (i) becomes L level, the signal G (i) _b also becomes L level, but the signals G (i) _a and G (i) _c Becomes the H level of the non-selection signal.
Therefore, in the i-th row and the j-th column, among the nine unit circuits corresponding to the sub-pixel 130, the transistor 122 is turned on in the three unit circuits 1000 corresponding to the central scanning line 12, but the transistor 122 is turned on. In addition, in the six unit circuits 1000 corresponding to the lowermost scanning line 12, the transistor 122 is turned off.
On the other hand, when the signal G (i) _b becomes L level, the leftmost one of the three data lines 14 corresponding to the j-th column is directed to the O LED 150 at the i-th row and the j-th column. The point that the potential V_0 is supplied to the other two data lines 14 while the signal S (j) of the gradation level is supplied is similar to the initial state.

Therefore, of the nine unit circuits 1000 corresponding to the sub-pixel 130 at the i-th row and the j-th column, the current flows toward the OLED 150 only in the enabled central scanning line 12 of the three scanning lines 12. , And only the unit circuit 1000 corresponding to the enabled leftmost data line 14 among the three data lines 14, and the OLED 150 in the i-th row and the j-th column emits light in accordance with the current.
Here, the sub-pixels 130 in the i-th row and the j-th column have been described, but the same applies to the sub-pixels 130 in the i-th row and other columns. Only the unit circuit 1000 corresponding to the leftmost data line 14 among the data lines 14 causes a current corresponding to the holding voltage of the capacitor Cpix to flow to the OLED 150 in the corresponding sub-pixel 130.
Therefore, of the three scanning lines 12 corresponding to the i-th row, the top scanning line 12 or the unit circuit 1000 corresponding to the top scanning line 12 becomes defective, and the i-th row becomes Even if a display defect occurs, the display defect can be repaired.

In response to this instruction, the X selector 42 corresponding to the j-th column, as shown in FIG. 7, converts the data signal S (j) from the data line driving circuit 40 into three data corresponding to the OLED 150 in the j-th column. Among the lines 14, the signal S (j) _b is supplied to the enabled central data line 14, and the signal of the potential V_0 is supplied to the leftmost data line 14 as the signal S (j) _a. A signal of a potential V_0 is supplied to the data line 14 as a signal S (j) _c.
Therefore, in the nine unit circuits 1000 corresponding to the sub-pixel 130 at the i-th row and the j-th column, the current is supplied to the OLED 150 only in the uppermost one of the three scanning lines 12 that is enabled. Of the line 12 and the three data lines 14, only the unit circuit 1000 corresponding to the enabled central data line 14 is provided, and the OLED 150 in the i-th row and the j-th column emits light according to the current.
Here, although described sub-pixel 130 of the i-th row and j-th column, a another row are the same for sub-pixels 130 of the j-th column, the top of the scanning of the three scanning lines 12 Only the unit circuit 1000 corresponding to the center data line 14 of the line 12 and the three data lines 14 is provided, and the OLED 150 in the i-th row and the j-th column emits light according to the current.
Therefore, out of the three data lines 14 corresponding to the j-th column, the leftmost data line 14 or the unit circuit 1000 corresponding to the leftmost data line 14 becomes defective, and the j-th column becomes defective. Even if a display defect occurs, the display defect can be repaired.
If a display defect occurs even if the leftmost and center data line 14 among the three data lines 14 corresponding to the j-th column is enabled, the rightmost data line 14 is enabled. What should be done.

In the first embodiment, one of the three scanning lines 12 corresponding to one sub-pixel 130 is enabled, and the other two are disabled. Use one line. Further, by enabling one of the three data lines 14 corresponding to one sub-pixel 130 and disabling the other two, one of the three columns is enabled. Use Then, a current is supplied to the OLED 150 using one unit circuit 1000 corresponding to the intersection of the enabled scanning line 12 and the enabled data line 14, and the other eight unit circuits 1000 are not used. Configuration. That is, the unit circuit 1000 that allows current to flow through one OLED 150 is determined by enabling only one scanning line 12 out of three rows and enabling only one data line 14 out of three columns. It is a configuration that is performed.
Then, the determined one unit circuit 1000 drives the OLED 150, and one of the other eight unit circuits 1000 replaces the one unit circuit 1000 with the scanning line 12 or the data line 14 to be enabled. The OLED 150 can be driven by the change.
Note that the unit circuit 1000 for flowing a current through the OLED 150 may have a configuration determined as follows.
For example, as shown in FIG. 8, a transistor 123 which is an example of a light emission control transistor may be provided between the transistor 121 and the OLED 150 in each unit circuit 1000.
In the unit circuit 1000 having this configuration, if the transistor 123 is off, the transistor 121 does not flow current toward the OLED 150 regardless of the holding voltage of the capacitor Cpix.
Therefore, by supplying a control signal aligned in the row or column direction to the gate node of the transistor 123, the row or column of the unit circuit 1000 used for driving the OLED 150 can be selected.
For the control signals of the transistors 123, for example, if they are aligned in the row direction, the Y selector 22 supplies a signal for turning on the transistor 123 to one of the three rows in accordance with an instruction from the control circuit 5, and outputs the signal in the column direction. In this case, the X selector 42 may supply a signal for turning on the transistor 123 to one of the three columns in accordance with an instruction from the control circuit 5.
Further, when aligning in the column direction, the X selector 42 may be omitted, and the data line driving circuit 40 may directly supply a signal to each of the data lines 14. In this configuration, the data line drive circuit 140 may receive information on the data line 14 to be enabled or disabled from the control circuit 5 and enable or disable each of the data lines 14 according to the information. . That is, in this configuration, the data line drive circuit 140 supplies a data signal corresponding to the gray level to the data line 14 to be enabled, and supplies a potential corresponding to black display to the data line 14 to be disabled. V_0 signal is supplied.
Since the transistor 123 may be in series with the transistor 121 and the OLED 150 in each unit circuit 1000, the transistor 123 is not limited to between the transistor 121 and the OLED 150 as shown in FIG. May be provided between them.

FIG. 11 is a diagram showing an electrical configuration of five unit circuits 1000 and three sub-pixels 130 indicated by black circles in FIG. Note that FIG. 11 is merely a diagram for describing an electrical configuration, and the pitch of the sub-pixels 130 is different from that of FIG.
As shown in FIG. 11, in the row, the R sub-pixel 130 in the first column (left end) corresponds to only the unit circuit 1000 in the first column, and the unit circuit 1000 supplies a current to the R OLED 150. . The G sub-pixels 130 in the second column correspond to the unit circuits 1000 in the second and third columns, and one of the unit circuits 1000 passes a current to the G OLED 150. The B sub-pixels 130 in the third column correspond to the unit circuits 1000 in the fourth and fifth columns, and one of the unit circuits 1000 passes a current to the OLED 150 in B.
Of these, since the unit circuits 1000 in the second and fifth columns are spares, the data lines 14 in the second and fifth columns are disabled in the initial state, and the first, third, and fourth data lines 14 are disabled. The data line 14 in the column is enabled.
If a display defect occurs in the third or fourth column in the initial state, the display defect can be repaired by enabling the data line 14 in the second or fifth column.
Although omitted in FIG. 11, the unit circuit 1000 in the eighth column is also a spare as shown in FIG. Therefore, if a display defect occurs in the seventh column in the initial state, the display defect can be repaired by enabling the data line 14 in the eighth column.

Specifically, the sub-pixels 130 in the first row use the unit circuits 1000 in the first row, and use the unit circuits 1000 in the second row as spares. Therefore, (1) is added to the notation “→” indicating the position of the scanning line 12 in the first row , meaning that the unit circuit 1000 in the first row is used in a low definition area. The notation “→” indicating the position of the scanning line 12 indicates that the unit circuit 1000 on the second row is reserved, and a blank mark (blank) is added.
Note that the sub-pixels 130 in the second row use the unit circuits 1000 in the third row. Therefore, (1) is added to the notation “→” indicating the position of the scanning line 12 in the third row.

Claims (15)

A first scanning line and a second scanning line;
A first data line and a second data line;
A first unit circuit provided corresponding to the intersection of the first scanning line and the first data line;
One of an intersection between the first scanning line and the second data line, an intersection between the second scanning line and the first data line, or an intersection between the second scanning line and the second data line. A second unit circuit provided for each of the
An electro-optic element,
With
An electro-optical device, wherein the first unit circuit drives the first electro-optical element, and the second unit circuit can drive the electro-optical element in place of the first unit circuit. Further comprising a drive circuit,
The second unit circuit is provided corresponding to an intersection between the first scanning line and the second data line,
The electro-optical device according to claim 1, wherein the drive circuit enables one of the first data line or the second data line and disables the other of the first data line or the second data line. The electro-optical device according to claim 2, wherein the drive circuit supplies a signal of a level that causes the electro-optical element to perform black display to the other of the first data line or the second data line. Further comprising a drive circuit,
The electro-optical device according to claim 1, wherein the second unit circuit is provided corresponding to an intersection between the second scanning line and the first data line. The electro-optical device according to claim 4, wherein the drive circuit enables one of the first scan line or the second scan line and disables the other of the first scan line or the second scan line. The first unit circuit includes a first driving transistor and a first light emission control transistor,
The first driving transistor is capable of controlling a current flowing through the electro-optical element,
The first light emission control transistor is connected in series to the first drive transistor and the electro-optical element,
The second unit circuit includes a second driving transistor and a second light emission control transistor,
The second drive transistor is capable of controlling a current flowing through the electro-optical element,
The second emission control transistor is connected in series to the second drive transistor and the first electro-optical element,
The electro-optical device according to claim 4, wherein the drive circuit turns on one of the first light emission control transistor and the second light emission control transistor, and turns off the other of the first light emission control transistor and the second light emission control transistor. apparatus. A third unit circuit provided corresponding to the intersection of the first scanning line and the second data line;
A fourth unit circuit provided corresponding to the intersection of the second scanning line and the second data line;
Further comprising
The driving circuit includes:
Enabling one of the first scan line or the second scan line and one of the first data line or the second data line,
Disabling the other of the first scan line or the second scan line and the other of the first data line or the second data line,
The electro-optical device according to claim 4, wherein the electro-optical element is driven by any one of the first unit circuit, the second unit circuit, the third unit circuit, or the fourth unit circuit. A plurality of scanning lines including a first scanning line and a second scanning line;
A plurality of data lines including a first data line and a second data line;
A plurality of unit circuits including a first unit circuit and a second unit circuit, provided in correspondence with intersections of the plurality of scanning lines and the plurality of data lines;
A plurality of electro-optical elements including a first electro-optical element;
Has,
The first unit circuit is provided corresponding to an intersection between the first scanning line and the first data line,
The second unit circuit includes an intersection between the first scanning line and the second data line, an intersection between the second scanning line and the first data line, or an intersection between the second scanning line and the second data line. Provided corresponding to one of the intersections with
An electro-optical device, wherein the first unit circuit drives the first electro-optical element, and the second unit circuit can drive the first electro-optical element in place of the first unit circuit. The plurality of scanning lines are m (m is an integer of 3 or more) lines,
The plurality of data lines are n (n is an integer of 3 or more),
The plurality of unit circuits are arranged in m rows and n columns corresponding to intersections of the m scanning lines and the n data lines,
The electric device according to claim 8, wherein the plurality of electro-optical elements are arranged in M (M is an integer of 2 or more satisfying M <m) rows N (N is an integer of 2 or more satisfying N <n) columns. Optical device. Among the plurality of electro-optical elements,
The electro-optical device according to claim 8, wherein the density of the electro-optical elements arranged in the first area is lower than the density of the electro-optical elements arranged in the second area. A first scanning line and a second scanning line;
A first data line and a second data line;
A first unit circuit provided corresponding to an intersection of the first scanning line and the first data line;
One of an intersection between the first scanning line and the second data line, an intersection between the second scanning line and the first data line, or an intersection between the second scanning line and the second data line. A second unit circuit provided for each of the
An electro-optic element,
Has,
The electro-optical device is configured such that the electro-optical element is driven by one of the first unit circuit and the second unit circuit. The second unit circuit includes:
Provided corresponding to the intersection of the first scanning line and the second data line, or the intersection of the second scanning line and the second data line;
When the first data line has a defect, the electro-optical element is driven by the second unit circuit,
The electro-optical device according to claim 11, wherein a signal of a level that causes the electro-optical element to perform black display is supplied to the first data line. The second unit circuit includes:
Provided corresponding to the intersection of the second scanning line and the first data line, or the intersection of the second scanning line and the second data line;
When the first unit circuit is used and the second unit circuit is not used, of the first unit circuit or the second unit circuit,
The electro-optical device according to claim 11, wherein the first scanning line is enabled, and the second scanning line is disabled. The first unit circuit includes a first driving transistor and a first light emission control transistor,
The first driving transistor is capable of controlling a current flowing through the electro-optical element,
The first light emission control transistor is connected in series to the first drive transistor and the first electro-optical element,
The second unit circuit includes a second driving transistor and a second light emission control transistor,
The second drive transistor is capable of controlling a current flowing through the electro-optical element,
The second emission control transistor is connected in series to the second drive transistor and the first electro-optical element,
One of the first light emission control transistor or the second light emission control transistor is turned on, and the other of the first light emission control transistor or the second light emission control transistor is turned off,
The electro-optical device according to claim 11, wherein the electro-optical element is driven by any one of the first unit circuit and the second unit circuit.   An electronic apparatus comprising the electro-optical device according to claim 1.

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